| 发明名称 |
BERGBULT OCH BERGBULTNINGSFORFARANDE |
| 摘要 |
A tube-formed rockbolt is partly circular in its cross-section and opposite its circular portion (12) it has a deep depression (16-18). Its ends are sealed and its outer end has a hole (44, 45) or a fitting (24) through which the bolt can be supplied with high pressure water that expands the tube to anchor it in the borehole. |
| 申请公布号 |
SE7902129(L) |
申请公布日期 |
1980.09.10 |
| 申请号 |
SE19790002129 |
申请日期 |
1979.03.09 |
| 申请人 |
ATLAS COPCO AB |
发明人 |
ROMELL G V R;SKOGBERG B T |
| 分类号 |
F16B13/04;E02D5/80;E21D20/00;E21D21/00;F16L58/08;(IPC1-7):E21D20/02 |
主分类号 |
F16B13/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
